Treatment of emery-wheels



UNITED STATES PATENT OFFICE.

JOHN F. WOOD, OF BOSTON, MASSACHUSETTS.

TREATMENT OF EMERY-WHEELS.

SPECIFICATION forming part of Letters Patent No. 227,402, dated May 11, 1880. Application filed December 13, 1879. v

To all whom it may concern Be it known that 1, JOHN F. WOOD, of the city of Boston, county of Suffolk, and State of Massachusetts, have invented a new and useful Improvement in Emery-Wheels made with a binding material soluble in water, of which the following is a specification.

My invention consists in an emery-wheel made with a binding material soluble in water, saturated in melted paraffine-until the paraffine has completely permeated all the pores of the wheel. It can be readily ascertained when this is accomplished by observing the wheels while they are undergoing the treatment.

The paratfine should be as hot as it can be made by conveying steam through pipes brought in contact with the paraffine.

My invention is especially useful for treating emery-wheels made in the manner before described, which wheels are to be used for grinding wood fiber in the manufacture of paper-pulp, for the fiber must be ground when saturated with water; and if emery-wheels made with a binding material soluble in water are used for this purpose they must be speoially prepared, or the Water will dissolve the binding material, and the wheel will, of course, fall in pieces and be worthless.

I. claim as my invention- As an article of manufacture, an emerywheel having a binding material soluble in water, and said wheel saturated with paraffine, substantially in the manner and for the purpose described.

JOHN F. WOOD.

itn esses GEO. S. BOUTWELL, FRANCIS M. BOUTWELL. 

